The rugged star also appeared in several movies for MGM, including 'Bad Day at Black Rock' and 'Rhapsody.'
Ericson died Sunday of pneumonia in Santa Fe, New Mexico, where he had been living since the mid-1990s, a family spokesman said.
Ericson appeared on Broadway in the original production 1951 of Stalag 17, directed by José Ferrer, and he made his film debut in Teresa (1951), directed by Fred Zinnemann. Three years later, he starred with Elizabeth Taylor in Rhapsody (1954).
Ericson played "Man Friday" Sam Bolt opposite Francis' private eye title character and a pet ocelot named Bruce on ABC's Honey West, produced by Aaron Spelling. The action show lasted just one 30-episode season (1965-66), but Francis' karate kicks lived long afterward in reruns and in syndication.
On television before and after Honey West, Ericson showed up on Shirley Temple's Storybook; Wagon Train; The Fugitive; Bonanza; Marcus Welby, M.D.; Police Woman; CHiPs; General Hospital; and many other shows.
Survivors include his wife, Karen, and daughter, Nicole.